Differences in Cardiovascular Health at the Intersection of Race, Ethnicity, and Sexual Identity.

IMPORTANCE: An understanding of the intersectional effect of sexual identity, race, and ethnicity on disparities in cardiovascular health (CVH) has been limited.

OBJECTIVE: To evaluate differences in CVH at the intersection of race, ethnicity, and sexual identity using the American Heart Association's Life's Essential 8 measure.

DESIGN, SETTING, AND PARTICIPANTS: This cross-sectional study was conducted from July 27 to September 6, 2023, using National Health and Nutrition Examination Survey data from 2007 to 2016. Participants were noninstitutionalized, nonpregnant adults (aged 18-59 years) without cardiovascular disease or stroke.

EXPOSURES: Self-reported sexual identity, categorized as heterosexual or sexual minority (SM; lesbian, gay, bisexual, or "something else"), and self-reported race and ethnicity, categorized as non-Hispanic Black (hereafter, Black), Hispanic, non-Hispanic White (hereafter, White), and other (Asian, multiracial, or any other race and ethnicity).

MAIN OUTCOME AND MEASURES: The primary outcome was overall CVH score, which is the unweighted mean of 8 CVH metrics, assessed from questionnaire, dietary, and physical examination data. Regression models stratified by sex, race, and ethnicity were developed for the overall CVH score and individual CVH metrics, adjusting for age, survey year, and socioeconomic status (SES) factors.

RESULTS: The sample included 12 180 adults (mean [SD] age, 39.6 [11.7] years; 6147 [50.5%] male, 2464 [20.2%] Black, 3288 [27.0%] Hispanic, 5122 [42.1%] White, and 1306 [10.7%] other race and ethnicity). After adjusting for age, survey year, and SES, Black (β, -3.2; 95% CI, -5.8 to -0.6), Hispanic (β, -5.9; 95% CI, -10.3 to -1.5), and White (β, -3.3; 95% CI, -6.2 to -0.4) SM female adults had lower overall CVH scores compared with their heterosexual counterparts. There were no statistically significant differences for female adults of other race and ethnicity (β, -2.8; 95% CI, -9.3 to 3.7) and for SM male adults of any race and ethnicity compared with their heterosexual counterparts (Black: β, 2.2 [95% CI, -1.2 to 5.7]; Hispanic: β, -0.9 [95% CI, -6.3 to 4.6]; White: β, 1.5 [95% CI, -2.2 to 5.2]; other race and ethnicity: β, -2.2 [95% CI, -8.2 to 3.8]).

CONCLUSIONS AND RELEVANCE: In this cross-sectional study, CVH differed across race and ethnicity categories in SM females, suggesting that different communities within the larger SM population require tailored interventions to improve CVH. Longitudinal studies are needed to identify the causes of CVH disparities, particularly in Black and Hispanic SM females and inclusive of other racial and ethnic identities.